Studies on a poly(styrene-divinylbenzene)-encapsulated sub-micrometer sized organic-inorganic hybrid silica packing, its synthesis, some of its characteristics and applications.

摘要: Abstract The hydrolyzed product of a mixture tetraethoxysilane (TEOS) and vinyltriethoxysilane (VTEOS) was used to produce organic–inorganic hybrid silica by sol–gel processing. kind composite with vinyl groups incorporated into the structure final particles through CSi bonds. These were spherical average diameter about 350 nm as measured scanning electron microscopy (SEM). non-porous proved BET method. subsequently encapsulated layer PS–DVB, polymeric styrene divinylbenzene, on particle surface anchors polymer chains. packing stationary phases in CEC, chromatographic behaviors studied. Experimental results showed that, expected, smaller phase resulted higher column efficiencies. In comparison columns packed 5 μm encapsulated-silica same other sub-micron reported, it can be concluded that EOF velocity is independent when using phase, but determined nature phase.